The influence of hydrogen content in coal on the gasification reaction
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Please analyze: What is the impact of the hydrogen content in coal on the gasification reaction?
Coal has a complex macromolecular structure; generally, the hydrogen-rich regions have weaker bond energies, making them prone to breaking and thus exhibiting high reactivity, while the carbon-rich regions have stronger bond energies, making it difficult for them to break and resulting in low gasification reactivity. As the coal rank increases, the carbon content rises gradually, and accordingly the reactivity decreases.
Throughout the entire process of coal metamorphism, as the degree of coalification increases, the hydrogen content gradually decreases; coal with a lower degree of coalification has a higher hydrogen content； Coal with a high degree of coalification has a low hydrogen content. The general rule is that the hydrogen content decreases as the carbon content increases. This is especially evident at the bituminous coal stage. For coal used in gasification, it is desirable that the contents of the active elements carbon and hydrogen be as high as possible, while the contents of other elements should be as low as possible.